StomatitisMucositisMouth MucosaBenzydamineGlossitisFibroblast Growth Factor 7MouthwashesRadiation InjuriesRadiotherapyOral HemorrhageLaser Therapy, Low-LevelOral UlcerHead and Neck NeoplasmsRadiation Injuries, ExperimentalRadiation-Protective AgentsLasers, SemiconductorAntineoplastic Combined Chemotherapy ProtocolsFluorouracilTransplantation ConditioningDrug-Related Side Effects and Adverse ReactionsChlorhexidineTreatment OutcomeOral HygieneHematopoietic Stem Cell TransplantationAntineoplastic AgentsMouthCombined Modality TherapyMesocricetusCandidiasis, OralAnti-Infective Agents, LocalNeutropeniaHematologic NeoplasmsParenteral Nutrition, TotalNeoplasmsDouble-Blind MethodWhole-Body IrradiationCranial IrradiationSeverity of Illness IndexEtoposideLeukemiaProspective StudiesAdministration, TopicalCyclophosphamideBone Marrow TransplantationLymphomaPrecursor Cell Lymphoblastic Leukemia-LymphomaPainPilot ProjectsSalivaAntimetabolites, AntineoplasticStatistics, NonparametricFibroblast Growth FactorsLeucovorinRecombinant ProteinsMethotrexateInfusions, IntravenousCisplatinCricetinaeXerostomiaDrug Administration Schedule